Chapter 7. Using Kinect's Microphone Array
The Kinect device consists of a microphone array that supports a multitude of audio features. The Kinect device has four separate downward-facing microphones that are placed at the bottom of the Kinect device in a linear fashion.
The microphone array allows the following:
Capturing better quality sound and providing inbuilt signal processing, including noise suppression and echo cancellation
Identifying the source direction of the incoming sound
Based on the sound to each microphone in the array, it can automatically find out the direction that the sound is coming from and listen to a specific microphone by suppressing the other noises
Once the direction of the sound source is set, the Kinect sensor is intelligent enough to change the direction as and when the source moves. One of the common examples of such a scenario is playing a game using voice commands. If the player moves, the sound source's direction moves automatically.
The Kinect sensor has...
